●Polyvinyl chloride is not used in this product.

※ 1 Graph shows measured data comparing temperatures of plastic bottles either inside, or outside the product. In both cases, ambient temperature was 40℃, four 500 ml plastic bottles were filled with water below 4℃ and temperatures recorded once water temperature reached 4℃. If there are fewer plastic bottles, or depending on conditions of use, the heat preserving performance shown in the graph may not be achievable.